<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<style>
  #box {
    width: 200px;
    height: 100px;
    border: 1px solid black;
    box-shadow: 10px 10px 10px;
  }
</style>

<body>

  <input type="text" class="input1">

  <div id="box" draggable="true"></div>
  <script src="./index.js"></script>
</body>

</html>